312112312223320 has 32 divisors (see below), whose sum is σ = 802574517146400. Its totient is φ = 107009935619328.

The previous prime is 312112312223303. The next prime is 312112312223357. The reversal of 312112312223320 is 23322213211213.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557343414405 + ... + 557343414964.

It is an arithmetic number, because the mean of its divisors is an integer number (25080453660825).

Almost surely, 2^{312112312223320} is an apocalyptic number.

It is an amenable number.

312112312223320 is an abundant number, since it is smaller than the sum of its proper divisors (490462204923080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312112312223320 is a wasteful number, since it uses less digits than its factorization.

312112312223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114686829387 (or 1114686829383 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 312112312223320 its reverse (23322213211213), we get a palindrome (335434525434533).

The spelling of 312112312223320 in words is "three hundred twelve trillion, one hundred twelve billion, three hundred twelve million, two hundred twenty-three thousand, three hundred twenty".